Six new European routes are being added by British Airways from Heathrow for summer 2020.
Destinations in Greece, Italy, Kosovo, Montenegro and Turkey feature.
Routes to Dalaman and Bodrum in Turkey are returning to the Heathrow network with Saturday flights from May 23 to October 24.
These services will join a new summer link between Gatwick and Antalya from April 30.
BA also already operates weekly flights to Dalaman from Gatwick.
The airline will be serving the Kosovan and Montenegrin capitals of Pristina and Podgorica for the first time with weekly Saturday flights between July 4 and August 29.
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Perugia in Italy gains three flights a week on Mondays, Thursdays and Saturdays from July 2 to August 31.
Rhodes will be served on Saturdays from Heathrow in addition to flights from Gatwick.
The airline is also increasing frequency on 16 short haul routes from Heathrow, including Larnaca, Brindisi, Nice, Ibiza, Tenerife, Split, Olbia, Kefalonia and Preveza.
Networks and alliances director Neil Chernoff said: “We are gearing up for an exciting summer next year as we add more routes to our extensive global network.
“We’re always developing our leisure offering and are pleased to be adding completely new destinations to British Airways’ Heathrow map.
“Our commitment to offering flights and holidays to a wide variety of destinations at competitive prices can help people plan ahead for summer 2020.”